If d is the distance between the flange angles,
Vertical stiffeners are provided in steel plate girders if the web is less than d/85
Vertical stiffeners are provided in high tensile steel plate girders if the web is less than d/175
Horizontal stiffeners are provided in steel plate girders if the web is less than d/200
All the above
Correct Answer :
D. All the above
Related Questions
The main assumption of the method of simple design of steel frame work, is:
Beams are simply supported
All connections of beams, girders and trusses are virtually flexible
Members in compression are subjected to forces applied at appropriate eccentricities
All the above
The difference between gross diameter and nominal diameter for the rivets up to 25 mm diameter is
1.0 mm
1.5 mm
2.0 mm
2.5 mm
Horizontal stiffener in a plate girder is provided to safeguard against
Shear buckling of web plate
Compression buckling of web plate
Yielding
All of the above
If the unsupported length of a stanchion is 4 metres and least radius of gyration of its cross-section is 5, the slenderness ratio of the stanchion, is
60
70
80
100
The central deflection of a simply supported steel beam of length L with a concentrated load W at the centre, is
WL3/3EI
WL4/3EI
WL3/48EI
5WL4/384EI
The maximum tensile and compressive bending stress in extreme fibres of rolled I-sections and channels on the effective section, is
1500 kg/cm2
1420 kg/cm2
1650 kg/cm2
2285 kg/cm2
By providing sufficient edge distance, which of the following failures of riveted joint can be avoided?
Tension failure of the plate
Shear failure of the rivet
Shear failure of the plate
Crushing failure of the rivet
The tensile strength of mild steel for bolts and nuts should not be less than
32 kg/mm2
36 kg/mm2
40 kg/mm2
44 kg/mm2
Effective length of a column effectively held in position at both ends and restrained in direction at one end, is
L
0.67 L
0.85 L
1.5 L
If d is the distance between the flange angles of a plate girder, vertical stiffeners are provided at a distance not greater than
d but not less than 0.20 d
1.25 d but not less than 0.33 d
1.5 d but not less than 0.33 d
2.0 d but not less than 0.50 d
Rolled steel beams are designated by Indian Standard series and its
Weight per metre and depth of its section
Depth of section and weight per metre
Width of flange and weight per metre
Weight per metre and flange width
The effective length of a battened strut effectively held in position at both ends but not restrained in direction is taken as
1.8 L
L
1.1 L
1.5 L
Maximum pitch of rivets, used in steel stacks, is limited to
6 t
10 t
12 t
16 t Where t is thickness of thinner plate being connected
A column splice is used to increase
Length of the column
Strength of the column
Cross-sectional area of the column
None of these
For a rectangular section, the ratio of the maximum and average shear stresses, is
1.5
2.0
2.5
3.5
The method of design of steel framework for greatest rigidity and economy in weight, is known as
Simply design
Semi-rigid design
Fully rigid design
None of these
In double lacing, the thickness t of flat lacing is
t < 1/40 th length between inner end rivets
t < 1/50 th length between inner end rivets
t < 1/60 th length between inner end rivets
t < 1/70 th length between inner end rivets
Pick up the incorrect statement from the following:
The nominal diameter of a rivet is its diameter before driving
The gross diameter of a rivet is the diameter of rivet hole
The gross area of a rivet is the cross-sectional area of the rivet hole
The diameter of a rivet hole is equal to the nominal diameter of the rivet plus 1.5 mm
Which of the following sections should preferably be used at places where torsion occurs?
Angle section
Channel section
Box type section
Any of the above
In rolled steel beams, shear force is mostly resisted by
Web only
Flanges only
Web and flanges together
None of these
The minimum pitch of rivet holes of diameter d should not be less than
d
1.25 d
1.5 d
2.5 d
Tacking rivets in compression plates not exposed to the weather, have a pitch not exceeding 300 mm or
16 times the thickness of outside plate
24 times the thickness of outside plate
32 times the thickness of outside plate
36 times the thickness of outside plate
When two plates are placed end to end and are joined by two cover plates, the joint is known as
Lap joint
Butt joint
Chain riveted lap joint
Double cover butt joint
A structural member subjected to tensile force in a direction parallel to its longitudinal axis, is generally known as
A tie
A tie member
A tension member
All the above
The side thrust T on the tie rods provided at the end beam of jack arch of rise R, is calculated from the formula
T = WL/4R
T = WR/8L
T = WL/8R
T = WL/2R
Area of openings for buildings of large permeability is more than
10% of wall area
20% of wall area
30% of wall area
50% of wall area
The maximum spacing of vertical stiffeners is
1.33 d
1.25 d
1.5 d
1.75 d Where d is the distance between flange angles
When a tension member consists of two channel sections, the allowance for rivet hole is made for two holes from
Each web
Each flange
Each web or one hole from each flange whichever is more
Each web or one hole from each flange whichever is less
In the virtual work method, the virtual quantity is
Displacement
Load
Slope
Moment
In case horizontal stiffeners are not used, the distance between vertical legs of flange angles at the top and bottom of a plate girder, is known as
Overall depth
Clear depth
Effective depth
None of these